$472+ Cheap flights from Heathrow (LHR) to Philadelphia (PHL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/29. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PHL
Oct 26 — Nov 21
Round-trip
1 adult, Economy
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Find cheap flights from Heathrow to Philadelphia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from London Heathrow to Philadelphia are usually found in March or January, booked 12 days in advance, depart on a Monday or Tuesday and return on a Wednesday
Cheap flight deals from Heathrow to Philadelphia
Cheapest
Best
Last-minute
One-way
Cheapest flights from Heathrow to PhiladelphiaExplore the most affordable flight options available from Heathrow to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 26, 2026.
Explore the most affordable flight options available from Heathrow to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 26, 2026.
This American Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/258:45 am -
1 stop12h 00m
Sun 11/297:35 pm -
1 stop32h 30m
Deal found 9/25![American Airlines logo]()
$776
This United Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:30 am -
1 stop13h 35m
Sun 11/1510:30 am -
2 stops39h 40m
Deal found 9/24![United Airlines logo]()
$777
This British Airways deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:25 pm -
1 stop10h 30m
Wed 10/216:45 pm -
Nonstop7h 05m
Deal found 9/24![British Airways logo]()
$778
This Lufthansa deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/199:30 am -
1 stop11h 35m
Thu 11/55:40 pm -
1 stop14h 10m
Deal found 9/25![Lufthansa logo]()
$779
This Air Canada deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:50 am -
2 stops12h 54m
Tue 11/109:15 am -
2 stops16h 55m
Deal found 9/25![Air Canada logo]()
$780
This ChecknFly deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:40 am -
1 stop19h 05m
Wed 10/286:30 am -
1 stop20h 25m
Deal found 9/24![JetBlue logo]()
$781
This British Airways deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/61:25 pm -
1 stop10h 30m
Wed 10/286:40 pm -
1 stop11h 30m
Deal found 9/26![British Airways logo]()
$782
This United Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/79:00 am -
2 stops19h 25m
Sun 11/157:40 pm -
1 stop30h 00m
Deal found 9/25![United Airlines logo]()
$783
This Cheapflightsfares deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:30 am -
1 stop14h 35m
Tue 10/205:40 pm -
1 stop16h 00m
Deal found 9/25![Lufthansa logo]()
$784
This TravelUp deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:40 am -
2 stops17h 52m
Mon 11/25:05 pm -
2 stops14h 55m
Deal found 9/24![Air Canada logo]()
$785
This TravelUp deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:25 pm -
1 stop10h 30m
Sat 10/177:35 pm -
Nonstop7h 15m
Deal found 9/25![British Airways logo]()
$786
This ChecknFly deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:40 am -
1 stop19h 05m
Sat 10/246:30 am -
1 stop20h 25m
Deal found 9/21![JetBlue logo]()
$788
Best flights from Heathrow to PhiladelphiaDiscover carefully curated flight deals from Heathrow to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 26, 2026.
Discover carefully curated flight deals from Heathrow to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 26, 2026.
This British Airways deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/118:50 am -
1 stop12h 20m
Wed 11/186:35 pm -
Nonstop7h 00m
Deal found 9/24![British Airways logo]()
$781
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:30 am -
1 stop11h 35m
Sun 10/183:08 pm -
2 stops14h 17m
Deal found 9/23![United Airlines logo]()
$793
This Scandinavian Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:40 am -
2 stops20h 27m
Fri 10/2312:25 pm -
3 stops21h 10m
Deal found 9/21![Scandinavian Airlines logo]()
$824
This Delta deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/69:55 am -
2 stops17h 27m
Tue 10/135:29 pm -
2 stops13h 36m
Deal found 9/25![Delta logo]()
$827
This British Airways deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:50 am -
1 stop11h 10m
Mon 11/306:35 pm -
Nonstop7h 00m
Deal found 9/25![British Airways logo]()
$796
This United Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:55 am -
2 stops16h 47m
Wed 10/2810:30 am -
1 stop16h 10m
Deal found 9/24![United Airlines logo]()
$820
This Scandinavian Airlines deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:40 am -
2 stops20h 32m
Tue 11/1712:25 pm -
3 stops21h 10m
Deal found 9/26![Scandinavian Airlines logo]()
$824
This British Airways deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:50 am -
1 stop11h 10m
Sun 11/296:35 pm -
Nonstop7h 00m
Deal found 9/22![British Airways logo]()
$823
This Scandinavian Airlines deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:40 am -
2 stops23h 16m
Thu 11/57:05 am -
3 stops26h 30m
Deal found 9/26![Scandinavian Airlines logo]()
$824
This British Airways deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/277:50 am -
1 stop11h 10m
Mon 11/306:35 pm -
Nonstop7h 00m
Deal found 9/25![British Airways logo]()
$837
This Scandinavian Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/229:05 pm -
3 stops27h 29m
Sat 3/279:40 am -
3 stops23h 55m
Deal found 9/24![Scandinavian Airlines logo]()
$848
Last-minute flights from Heathrow to PhiladelphiaDiscover last-minute flight deals from Heathrow to Philadelphia. Data last updated September 26, 2026 and is based on user searches.
Discover last-minute flight deals from Heathrow to Philadelphia. Data last updated September 26, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/29:50 am -
1 stop14h 05m
Sun 10/48:25 pm -
1 stop9h 45m
Deal found 9/25![Aer Lingus logo]()
$776
This British Airways deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/61:25 pm -
1 stop10h 30m
Wed 10/286:40 pm -
1 stop11h 30m
Deal found 9/26![British Airways logo]()
$782
This British Airways deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:25 pm -
1 stop10h 30m
Wed 10/216:45 pm -
Nonstop7h 05m
Deal found 9/24![British Airways logo]()
$778
This TravelUp deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:25 pm -
1 stop10h 30m
Sat 10/177:35 pm -
Nonstop7h 15m
Deal found 9/25![British Airways logo]()
$786
This United Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:25 am -
2 stops21h 05m
Sun 10/117:30 pm -
1 stop30h 25m
Deal found 9/25![United Airlines logo]()
$790
This Lufthansa deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:30 am -
1 stop12h 35m
Thu 11/55:40 pm -
1 stop14h 10m
Deal found 9/25![Lufthansa logo]()
$789
This Cheapflightsfares deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:30 am -
1 stop14h 35m
Tue 10/205:40 pm -
1 stop16h 00m
Deal found 9/25![Lufthansa logo]()
$784
This Lufthansa deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/199:30 am -
1 stop11h 35m
Thu 11/55:40 pm -
1 stop14h 10m
Deal found 9/25![Lufthansa logo]()
$779
This ChecknFly deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:40 am -
1 stop19h 05m
Sat 10/246:30 am -
1 stop20h 25m
Deal found 9/21![JetBlue logo]()
$788
This TravelUp deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:40 am -
2 stops17h 52m
Mon 11/25:05 pm -
2 stops14h 55m
Deal found 9/24![Air Canada logo]()
$785
This ChecknFly deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:40 am -
1 stop19h 05m
Wed 10/286:30 am -
1 stop20h 25m
Deal found 9/24![JetBlue logo]()
$781
One-way flights from Heathrow to PhiladelphiaSearch for one-way flight options from Heathrow to Philadelphia. Find affordable one-way fares based on user searches. Data last updated September 26, 2026.
Search for one-way flight options from Heathrow to Philadelphia. Find affordable one-way fares based on user searches. Data last updated September 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/292:35 pm -
2 stops30h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$472
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/258:50 pm -
3 stops48h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$477
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/129:55 am -
3 stops35h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$490
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/169:55 am -
3 stops35h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$494
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:35 pm -
2 stops26h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$496
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2511:05 am -
2 stops34h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$501
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/212:15 pm -
3 stops41h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$505
This Mytrip deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1812:15 pm -
2 stops26h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Multiple Airlines logo]()
$506
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/226:00 pm -
2 stops27h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$507
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/79:45 am -
2 stops35h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$511
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/149:45 am -
2 stops35h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$518
Find flight deals from Heathrow to Philadelphia
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $776 (American Airlines) |
One-way from | $472 (Kiwi.com) |
Popular in | August |
Cheapest in | March |
Average price | $862 |
Good round-trip deal | $863 or less |
Good one-way deal | $686 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Heathrow to Philadelphia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 26, 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Philadelphia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Sat 10/24
8:40 am-6:28 pm
1 stop14h 48m
Philadelphia
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$565
Quickest round-trip
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Wed 11/18
1:10 pm-4:15 pm
Nonstop8h 05m
Philadelphia
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$575
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Sat 11/28
8:15 pm-4:05 pm
2 stops24h 50m
Philadelphia
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$578
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Thu 12/17
7:30 am-4:05 pm
1 stop13h 35m
Philadelphia
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$581
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Sat 12/26
9:20 am-6:56 pm
1 stop14h 36m
Philadelphia
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$598
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Mon 12/21
9:20 am-6:45 pm
1 stop14h 25m
Philadelphia
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$598
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Fri 12/25
10:35 am-1:50 pm
Nonstop8h 15m
Philadelphia
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$676
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Sat 12/26
1:10 pm-4:15 pm
Nonstop8h 05m
Philadelphia
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$676
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Thu 12/24
1:10 pm-4:15 pm
Nonstop8h 05m
Philadelphia
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$680
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Wed 11/11
8:50 am-4:10 pm
1 stop12h 20m
Philadelphia
Wed 11/18
6:35 pm-6:35 am
Nonstop7h 00m
$781
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Heathrow to Philadelphia
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Philadelphia in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on London Heathrow Airport-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Philadelphia flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on London Heathrow Airport-Philadelphia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Heathrow to Philadelphia
Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Heathrow with our price prediction graph.
LHR-PHL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to Philadelphia
Prices
Airlines
Delays
How far ahead should I book a flight from London Heathrow Airport to Philadelphia?
The best time to book flights from London Heathrow Airport to Philadelphia is 11 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from London Heathrow Airport to Philadelphia?
Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Philadelphia (average of $764). Flying from London Heathrow Airport to Philadelphia in August is currently the most expensive (average of $1,158). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LHR to PHL?
Find hourly flight availability from Heathrow to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 26, 2026.
When flying from London Heathrow Airport to Philadelphia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How often are flights from London to Philadelphia delayed?
About 16% of weekly flights between London and Philadelphia have experienced delays in the past year, with the average delay time being 156 minutes.
What is the most punctual flight time for London to Philadelphia flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to Philadelphia flights?
Over the last year, American Airlines have had the lowest number of delays on this route, with just 13% of flights being delayed.
The best insider tips for London Heathrow Airport to Philadelphia flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to Philadelphia trip
Our travel experts
Reviews of airlines servicing Philadelphia
Get insights into the airlines that provide service to Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Philadelphia. Reviews last updated September 26, 2026.
Peruse reviews from past customers who have flown with Aer Lingus,American Airlines, andBritish Airways from London Heathrow Airport to Philadelphia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.4
Comfort
7.2
Overall
7.3
Entertainment
7.0
Food
6.7
Crew
8.1
Reviews
1 / 20
10.0
ExcellentGriffith,Feb 2026
MAN - DUB
Boarding
7.4
Comfort
7.2
Overall
7.3
Entertainment
7.0
Food
6.7
Crew
8.1
Reviews
1 / 20
10.0
ExcellentGriffith,Feb 2026
MAN - DUB
Boarding
7.4
Comfort
7.2
Overall
7.3
Entertainment
7.0
Food
6.7
Crew
8.1
Reviews
1 / 20
10.0
ExcellentGriffith,Feb 2026
MAN - DUB
Boarding
7.4
Comfort
7.2
Overall
7.3
Entertainment
7.0
Food
6.7
Crew
8.1
Reviews
1 / 20
10.0
ExcellentGriffith,Feb 2026
MAN - DUB
Related info for your journey
Find useful and relevant information for your journey from Heathrow to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Philadelphia?
Book flights to Philadelphia if you plan to visit one of these locationsWildwood
Reading
King of Prussia
Camden
Ocean City
Wildwood Crest
Cherry Hill
Lewes
Plymouth Meeting
Wyomissing
Pottstown
Ephrata
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Vineland
Millville
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Search flights from Heathrow to Philadelphia by cabin class
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Heathrow and Philadelphia flights
Browse other Heathrow and Philadelphia flight options. Last updated on September 26, 2026.
Other flights from Heathrow
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on September 26, 2026.
Other flights to Philadelphia
Explore flights to Philadelphia departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 26, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Heathrow to Philadelphia
Discover the top 3 airlines that operate flights from Heathrow to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$610 | Average$849 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$614 | Average$816 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$700 | Average$1,075 | FlexibilityNo cancel fee | On-timeN/A |